Terri should not be his property. In the Sunny von Bulow case the court ruled that not the husband (who had a conflict of interest), but her children, should be granted guardianship. Sunny is in far worse condition than Terri.
Terri never made a "living will." If she had felt strongly about it, she would have done it. Furthermore, Michael only recalled it years later when it was to his benefit.
......and the entire judicial aparatus in Florida gave his BS their legal imprimatur.